package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;

import java.time.LocalDateTime;
import java.util.List;

import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /* 
     * 新增员工
     * 
     * @param employeeDTO
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        // TODO Auto-generated method stub
        Employee employee=new Employee();
        // employee.setIdNumber(employeeDTO.getIdNumber());
        // employee.setName(employeeDTO.getName());
        // employee.setPhone(employeeDTO.getPhone());
        // employee.setSex(employeeDTO.getSex());
        // employee.setUsername(employeeDTO.getUsername());
        BeanUtils.copyProperties(employeeDTO, employee);
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        employee.setStatus(StatusConstant.ENABLE);
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        //todo 后期需要修改为当前登录用户的ID
        Long currentId = BaseContext.getCurrentId();;
        employee.setCreateUser(currentId);
        employee.setUpdateUser(currentId);

        employeeMapper.insert(employee);

      
    }

    /* 
     * 分页查询
     * 
     * @param page
     * @param pageSize
     * @return
     */
   
    @Override
    public PageResult getpage(String name,int page, int pageSize) {
        // TODO Auto-generated method stub
        if(name==null){
            PageHelper.startPage(page, pageSize);
            List<Employee> list=employeeMapper.getpageall();
            Page<Employee> pageall= (Page<Employee>) list;
            PageResult pageResult=new PageResult();
            pageResult.setRecords(pageall);
            pageResult.setTotal(pageall.getTotal());
            return pageResult;
        }
        else{
            PageHelper.startPage(page, pageSize);
            List<Employee> list=employeeMapper.getpageone(name);
            Page<Employee> pageall= (Page<Employee>) list;
            PageResult pageResult=new PageResult();
            pageResult.setRecords(pageall);
            pageResult.setTotal(pageall.getTotal());
            return pageResult;
        }
        
      

       // throw new UnsupportedOperationException("Unimplemented method 'getpage'");
    }

    /* 
     * 禁用/启用
     */
    @Override
    public void status(Integer status,Long id) {
        // TODO Auto-generated method stub
        employeeMapper.status(status,id);
       // throw new UnsupportedOperationException("Unimplemented method 'status'");
    }

    /* 
     * 修改员工信息
     */
    @Override
    public void update(EmployeeDTO employeeDTO) {
        // TODO Auto-generated method stub
        // employeeDTO.setUpdateTime(LocalDateTime.now());
        // employeeDTO.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employeeDTO);
      //  throw new UnsupportedOperationException("Unimplemented method 'update'");
    }
/* 
 * 查询员工
 */
    @Override
    public Employee get(Long id) {
        // TODO Auto-generated method stub
        return employeeMapper.get(id);
    }
/* 
 * 修改密码
 */
    @Override
    public void editPassword(PasswordEditDTO passwordEditDTO) {
        // TODO Auto-generated method stub
        String newPassword = DigestUtils.md5DigestAsHex(passwordEditDTO.getNewPassword().getBytes());
        String oldPassword = DigestUtils.md5DigestAsHex(passwordEditDTO.getOldPassword().getBytes());
        passwordEditDTO.setNewPassword(newPassword);
        passwordEditDTO.setOldPassword(oldPassword);
        passwordEditDTO.setEmpId(BaseContext.getCurrentId());
        employeeMapper.editPassword(passwordEditDTO);
    }

}
